1875.] NEW SPECIES OF ERIGONE. 325 
and somewhat crescent-shaped one at their base on the outer side, 
the upper limb of the crescent having a series of short bristly hairs 
on its margin, and from their extremity projects a reddish brown spiny 
process whose point is somewhat bifid, and near its base there is a 
small, curved, pointed spine; the general colouring of the palpal 
organs is yellowish red-brown, of different tinges, mixed with a little 
black on the edges of some of the processes. 
The falces are long, strong, vertical, and rather divergent; towards 
the extremity of each falx, on the inner side, are three teeth rather 
widely separated from each other, the upper one being much the 
smallest. 
The mazille are of moderate length, of a broad oblong form, with 
the outer corners of their fore extremities rounded off and a little 
inclined towards the labium ; this latter is very short, of a somewhat 
semicircular form, and of a yellow-brown colour, similar to tha: of the 
sternum. 
The abdomen is of oval form, moderately convex above, and projects 
a very little over the base of the cephalothorax; it is of a dull pale 
yellowish brown colour, and clothed (but not thickly) with hairs. 
The female is larger than the male, the abdomen being much more 
convex above, and projecting considerably over the base of the cepha- 
lothorax ; the form of the genital aperture is peculiar, and from within 
it there projects backwards a not very long, but strong epigyne. 
Adults of both sexes of this species were received from M. Simon, 
by whom they were found at La Grande Chartreuse, France. 
This Spider belongs to Menge’s genus Bathyphantes, which, 
though difficult to characterize distinctively from either Linyphia or 
Erigone, will probably eventually be held to be a good genus. It 
certainly appears to have as much affinity with the former as with 
the latter ; and its ultimate place will probably be that of a transitional 
group distinct from either. 
ERIGONE SERRATA, Sp. n. (Plate XLIV. fig. 2.) 
Adult male, length not quite 1 line. 
This Spider is very closely allied to Z. sylvatica, Bl., but may be 
distinguished at once by being much smaller, by the caput being less 
elevated, its highest point being no higher than the thoracic junction, 
and also by the closer grouping of the eyes, those of the hinder row 
being as nearly as possible equidistant from each other, while in Z. 
sylvatica the interval between those of the hind central pair is di- 
stinetly less than that between each of them and the hind lateral 
on its side. Owing to the less-elevated caput, the height of the fa- 
cial space and clypeus is also distinctly less than in Z. sylvatica. 
In several important particulars there is a very marked similarity 
between the two species. Thus the present one has the peculiar, 
and very characteristic, longitudinal row of minute denticulations on 
the front of each of the falces; the palpi and palpal organs also are 
remarkably similar, the latter having on their outer side an almost 
identically shaped corneous process, whose upper edge is distinctly 
serrated ; the cubital joint also has a similar strong, tapering, nearly 
